JP2631503B2 - Compression connection device for wire and anchor clamp - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a device for compressively connecting an aluminum end clamp for fixing an end of a wire to a steel tower to the end of the wire, and in particular, to an apparatus for compressing and connecting the same. , A pair of opposed clamp supporting means and an electric wire supporting means for supporting the electric wire and the retaining clamp on both sides of the retaining clamp, and performing a compression-release-movement repetitive operation between the pair of supporting means. The present invention relates to an improvement of a compression connection device provided with a hydraulic compressor moving along.

(Prior Art) Conventionally, a manual device for compressively connecting an electric wire and an anchorage clamp is known. This apparatus is provided with a pair of opposing clamp support means and an electric wire support means for supporting the electric wire to which the retention clamp is mounted substantially horizontally on a gantry, and a hydraulic compressor is provided so as to be reciprocally movable between the pair of support means,
This hydraulic compressor is manually movable via a chain or the like.For example, in a state in which a retention clamp is attached to an end of an electric wire, these are clamped on both sides by a clamp supporting means and an electric wire supporting means, and the The clamp is arranged between a pair of dies of the hydraulic compressor, and the hydraulic compressor performs a repetitive operation of compression-release-movement to perform compression of the retention clamp by a predetermined length.

(Problems to be Solved by the Invention) In the above-mentioned conventional compression device, the clamp support means and the electric wire support means firmly hold the clamp and the electric wire to be compression-connected on both sides. If the operation causes the clamp and the electric wire to elongate in the axial direction, this cannot be escaped. As a result, warping of the clamp is promoted, and there is a possibility that the connection strength may be impaired due to the warpage and its correction. In addition, conventionally, since the elongation of the electric wire and the clamp had to be absorbed by the deflection of the electric wire between the two supporting means, excessive stress was applied to these supporting means, and they were easily broken. If the distance between the two support means is increased, there is a problem that the apparatus becomes large.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide a compact hydraulic compression device that does not cause warping of a sleeve due to compression, does not exert an excessive stress on the device during compression operation, and is compact. Things.

(Means for Solving the Problems) In the present invention, in order to solve the above problems, an electric wire W
Clamp support means 3 for fixing the tip of a retaining clamp C attached to one end of the wire, wire support means 2 for supporting the wire W substantially horizontally opposed to the clamp support means 3, clamp support means 3 and the wire In a compression connection device for an anchor clamp provided with a hydraulic compressor 4 movable along the anchor clamp while repeating a compression-release-movement operation between the anchor clamp and the support means 2, the clamp support means 3
Is provided on the gantry 1 so as to be movable so as to allow the displacement of the clamp C in the axial direction and to be able to return to the original position. A configuration in which it is provided so as to be movable in the axial direction is adopted.

(Operation) In the compression device of the present invention, the electric wire W and the endless clamp C are inserted in a state where the end of the electric wire W is inserted into the endless clamp C.
Are supported on both sides by the clamp support means 3 and the wire support means 2, respectively, and the retaining clamp C is connected to the hydraulic compressor 4
Is arranged between a pair of dies 6 and 6 and compressed into a hydraulic compressor 4-
While performing the release-movement repetitive operation, it is sequentially moved along the retaining clamp C to perform a compression operation of a predetermined length.

Due to the compression, the clamp C and the electric wire W extend in the axial direction, but the electric wire support means 2 and the clamp support means 3 move during the compression operation to allow the electric wire W to expand. Therefore, no excessive stress is applied to the wire support member 2 and the clamp support means 3, and the clamp C does not warp.

(Embodiment) An embodiment of the present invention is shown in FIG. 1 to FIG. 1 is a plan view of the compression device, FIG. 2 is a front view of the compression device, and FIG.
Fig. 4 is an exploded perspective view of the hydraulic compressor, Fig. 4 is a perspective view of a die and a sensor, Fig. 5 is a front view of the wire support means, Fig. 6 is a side view of the wire support means, and Fig. 7 is a clamp support means. FIG. 8 is a plan view of the clamp supporting means.

The retaining clamp compression device of the illustrated embodiment includes a portable gantry 1 equipped with casters, and a pair of wire support means provided opposite to each other on the gantry 1 for supporting an electric wire W to which the retaining clamp C is attached. 2 and a clamp support means 3, and a hydraulic compressor 4 provided on the gantry 1 so as to be able to reciprocate between the pair of support means 2 and 3. A nut 8 is fixed to a lower portion of the hydraulic compressor 4, and the nut 8 is screwed to a screw rod 7 provided on the gantry 1. The screw rod 7 is rotatable by the motor 5. Accordingly, the hydraulic compressor 4 can reciprocate along the screw rod 7 by the forward and reverse rotation of the driving motor 5. As shown in FIG. 3, a hydraulic compressor 4 comprises a pair of horizontally opposed pairs of a lower frame 10 having rollers 9 rolling on the gantry 1 and an upper frame 11 having substantially the same shape. Hydraulic head 12,1
Support two. That is, a pair of rectangular engaging holes 10a, 11a are formed on both sides of the upper and lower frames 10, 11, respectively, while rectangular columnar engaging protrusions 12a, 12a are protruded above and below each head 12. ing. The engaging projections 12a are fitted into the engaging holes 10a and 11a of the upper and lower frames, respectively, so that the heads 12 and 12 are held so as not to be opened. The ram of each head 12 has a die receiver 12b to which the die 6 can be attached and detached.
Is provided. That is, the die receiver 12b has a U-shape in cross section, and a pair of opposing engaging projections 12c are fitted into the engaging grooves 6c of the die 6, and the die 6 can be inserted from above. It has become. Each of the compression heads 12 is supplied to the die 6 by oil supply from the hydraulic pump P.
Can be compressed. 4th
As shown in the figure, one of the dies 6 is provided with an identification portion 6a extending downward, and this identification portion 6a has an identification hole.
6b is provided. Correspondingly, on the lower frame 10,
A photosensor 17 is provided for receiving the identification portion 6a when the dice 6 is mounted on the head 12 and detecting the type of the dice 6 based on the arrangement of the holes 6b. And
The type of the die 6 is identified by the arrangement combination of the holes 6b, and an automatic compression operation suitable for the type can be performed. 6d is a handle for attaching and detaching the die 6. A control device (not shown) incorporating a microcomputer is provided separately from the gantry 1, receives a signal from the sensor 17, and stores in advance a compression pitch and the number of compressions specific to the holding clamp C corresponding to the die 6 and stored in advance. Control the hydraulic control valve 16 and the drive motor 5 according to the following. number 5,
As shown in FIG. 6, the electric wire supporting means 2 comprises a movable base 13 movable along the mount 1 in the axial direction of the electric wire W;
13 and an electric wire support member 14 provided to be swingable. The moving table 13 is a roller for moving along the gantry 1.
13a. The electric wire support member 14 includes a column 14a pivotally attached to the movable table 13 at a lower end and a grip portion 14b for gripping the electric wire. A wing 14c extending horizontally on both sides in a direction orthogonal to the electric wire W is provided at an intermediate portion of the support 14a, and a spring 14c is provided between the wing 14c and the movable base 13.
d is interposed. Therefore, the wire support member 14 is swingable and can be returned to the original position by the spring 14d. For this reason, the compression operation by the hydraulic head 12 is performed in a state where the center between the two dies 6, 6 does not coincide with the center of the electric wire W and the retaining clamp C, and the horizontal movement of the retaining clamp C and the electric wire W is prevented. If it occurs, wire support means 2
When the clamping clamp C and the electric wire W are extended in the axial direction by compression, the clamp supporting means 3 and the electric wire supporting means 2 move in the same direction.
No excessive stress is applied to the device.

As shown in FIGS. 7 and 8, the clamp support means 3 includes a support post 3a pivotally attached to the gantry 1 at the lower end and a retaining clamp C attached to the end of the electric wire W. And a bracket 3b that can receive the puller C1 and hold it with the pin 3c. A projecting piece 3d extending horizontally in the axial direction of the electric wire W is provided below the column 3a, and a spring receiving pin 3e is provided so as to vertically pass through the projecting piece 3d. The spring receiving pin 3e is pivotally attached to the gantry 1 at the lower end so as to swing freely, and a spring 3f is interposed between the upper end and the projecting piece 3d. Therefore, when the electric wire W extends in the axial direction, the clamp supporting means 3 can swing in the axial direction following the electric wire W, and can return to the original vertical position by the force of the spring 3f. .

When the compression clamp of the present embodiment is used to compress and connect the retaining clamp C to the electric wire W, the upper frame 11 of the hydraulic compressor 4 is removed to open the heads 12 and 12, and first,
The die 6 is selected according to the type of the retaining clamp C to be compressed, and the die 6 is mounted on the head 12. Then, with the holding clamp C attached to the end of the electric wire W, the holding clamp C
Is connected to the bracket 3b of the clamp support means 3 and the wire W is gripped by the grip portion 14b of the wire support means 2. Next, the upper frame 11 is fitted on the heads 12, 12, and the hydraulic compressor 4 is set. Then, the hydraulic pump P is operated, and the power switch of the control device is turned on. Next, the hydraulic compressor 4 is moved and arranged at one end of the retaining clamp C.

The sensor 17 detects the type of the dice 6 from the identification unit 6a of the dice 6 mounted on the hydraulic compressor 4 and sends a signal to the control device. On the basis of the signal from the sensor 17, the control device controls the drive motor 5 and the control valve 16 in accordance with the compression pitch and the number of times of compression of the retaining clamp C corresponding to the die 6, which are stored in advance, and controls the compression operation. Start. During this time, the wire support means 2 is moved every time compression is performed, and the clamp support means 3 is moved.
Swings, the extension of the electric wire W and the retaining clamp C accompanying the compression is allowed. During the compression operation, both dies 6,
When the center between the wires 6 and the centers of the wires W and the clamps C do not coincide with each other, a phenomenon occurs in which the wires W and the clamps C are pushed by the dies 6 and move horizontally.
The clamp support means 3 and the wire support means 2 swing in the direction perpendicular to the axis of the wire W against the spring force to allow the movement of the wire W and the retaining clamp C, thereby allowing the clamp support means 3 and the wire support means to move. 2 to reduce the stress. When one compression operation is completed and the oil pressure reaches a predetermined value, a signal is issued from the pressure switch, and a return operation signal is issued to the control valve 16 via the control device. When the oil pressure in the head 12 reaches a predetermined value after the die 6 has completed the return operation,
A signal is issued from the pressure switch, a rotation signal is issued to the drive motor 5 via the control device, and the motor 5 rotates a predetermined number to move the hydraulic compressor 4 a predetermined distance. Thus, the same operation is repeated a predetermined number of times, and the compression connection of the end clamp C is completed. In the case of compression by this compression device, the retaining clamp C is simultaneously and horizontally mounted on the dies 6, 6 from both sides.
Since the compression is performed, the compression deformation on both sides of the retaining clamp C becomes substantially equal. Therefore, since the warp does not occur in the post-compression yielding clamp C, no correction is required, and a reduction in the connection strength due to this is avoided. Note that the present invention is not limited to the illustrated embodiment. For example, the present invention can be applied to a device in which a hydraulic compressor is manually moved, and the object of compression connection is not limited to an anchoring clamp.

(Effects of the Invention) As described above, in the present invention, the clamp support means 3 for fixing the tip of the retention clamp C attached to one end of the electric wire W, and the electric wire W facing the clamp support means 3
And a hydraulic compressor 4 movable between the clamp support means 3 and the wire support means 2 along the retaining clamp while repeating the compression-release-movement operation. In the compression connection device of the retaining clamp provided on the gantry 1, the clamp support means 3 is urged on the gantry 1 so as to be movable so as to allow displacement of the clamp C in the axial direction and to be able to return to the original position. And the wire support means 2 is provided movably in the axial direction of the wire W with respect to the gantry 1.
When the wire is compressed, the wire support means 2 and the clamp support means 3 move to release the elongation of the wire W in the axial direction, so that the clamp C does not warp. Since there is no need to allow the bending of the electric wire W, it is possible to provide an electric wire connection clamp compression device that can be reduced in size.

[Brief description of the drawings]

1 is a plan view of a compression device, FIG. 2 is a front view of a compression device, FIG. 3 is an exploded perspective view of a hydraulic compressor, and FIG. FIG. 5 is a front view of the wire support means, FIG. 6 is a side view of the wire support means, FIG. 7 is a front view of the clamp support means, and FIG. 8 is a plan view of the clamp support means. is there. DESCRIPTION OF SYMBOLS 1 ... Stand, 2 ... Wire support means, 3 ... Clamp support means, 3f ... Spring, 4 ... Hydraulic compressor, 5 ... Motor,
6: Die, 7: Screw bar, 8: Nut, 13: Moving table, C: Retention clamp, W: Electric wire.

Claims (1)

(57) [Claims] 1. A clamp supporting means for fixing a tip of a retaining clamp attached to one end side of an electric wire, an electric wire supporting means for supporting the electric wire substantially horizontally opposed to the clamp supporting means, and the clamp supporting means And between the wire support means,
In a compression connection device for an anchor clamp, wherein a hydraulic compressor movable along the anchor clamp while repeating a compression-release-movement operation is provided on the gantry, the clamp supporting means comprises: The electric wire supporting means is movably provided so as to allow displacement in the axial direction, and is urged so as to be able to return to the original position. The electric wire supporting means is provided movably in the axial direction of the electric wire with respect to the gantry. A compression connection device for an electric wire and an end clamp.